The ethmoid articulates with thirteen bones: 1  two bones of the neurocraniumâthe frontal, and the sphenoid (at the sphenoidal body and at the sphenoidal conchae). 2  eleven bones of the viscerocraniumâ, two nasal bones, two maxillae, two lacrimals, two palatines, two inferior nasal conchae, and the vomer.
Corn is a warm-season annual that is best planted after the soil temperature reaches 60Â°F, usually two or three weeks after the last frost in spring. Corn planted in cold, wet soil is unlikely to germinate. Corn grows best in air temperatures from 60Â° to 95Â°F.Corn can take from 60 to 100 days to reach harvest depending upon variety and the amount of heat during the growing season.orn seed germinates in 10 to 14 days at 75Â°F, but the rate of germination may reach only 75 percent. Start corn indoors 2 to 3 weeks before the last frost in spring for transplanting 2 to 3 weeks after the last frost. If your season is long enough, plant successive crops every two to three weeks. Planting and spacing.
How Corn Grows. Whether you're raising field corn, popcorn or sweet corn, they all grow basically the same way. Once the seed or kernel is planted in an inch or two of soil, it germinates in 5 to 12 days, depending on the variety and the soil temperature.